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Power Supply and Mute Control Circuit

Power Supply and Mute Control Circuit using 7815 and 7915 , BC549 , Relay

+5V 10A Regulator circuit

+5V 10A Regulator circuit using 7805 IC

STR STR50103 Switching Power Supplies

Switching Power Supplies using STR STR50103

Resolve a cramped raster on SONY TV KV21GPX?

Ouman asked: I have replaced the vertical deflection IC and checked all possible capacitors and resistors. Still no luck. No circuit diagram. American origin. Thanks Pete. I do remove caps and test with proper cap tester. Will follow your advice. Middle to top cramp with bit of a foldover on top. Frustrating! I keep grinding […]

Switch mode PSU diagram for car audio

Switch mode PSU diagram for car audio Switch mode PSU diagram for car audio

Schematic diagram for a broadband QRP SWR metering circuit and SSB TRANSCEIVER 80M / 40M boster filter IF Radio

A schematic diagram for a broadband QRP SWR metering circuit for use in a QRP antenna tuner. One could simply hold a momentary DPDT switch down and watch the LED while tuning the capacitors of the antenna tuner for minimum or zero light.

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